Integration with TestRail test case management software allows you to link test results in TestRails to YouTrack issues. For more information about integration and settings, please refer to the YouTrack Test Management with TestRail page at the official Gurock Software website.
On the YouTrack side, the only thing you need to do is to enable the REST API:
To enable the REST API:
In YouTrack web UI open thepage.
Scroll down the page to the REST API settings
Enter the URL of your TestRail server in the Allowed origins input field:
All other integration settings are configured in TestRail.